The yellow cab industry has found much to object to in the past two years under Mayor Michael Bloomberg and TLC Chairman David Yassky. Medallion owners have fretted about a plan to let livery cabs take street hail customers outside Manhattan’s central business district. They have griped about plans to require a new van-like Nissan for all taxi fleets later this year. And, eventually, they have filed suit to block the administration’s plans.

This time, the yellow cab companies find themselves on the side of both the regulators and the tech industry firms that are vying to be the first to offer customers a way to flag down a yellow cab with a touch of a smartphone screen.

The case was scheduled for argument on Feb. 28 before Judge Arthur Engoron, who had previously struck down the plan for street-hailing of liveries in boroughs outside Manhattan. An administrative judge agreed with a city motion to shift the e-hailing lawsuit to a different judge last week.

Yellow fleets don’t want to miss out on potential business coming from e-hail apps like Hailo, Taxi Magic, Flywheel or Uber, a spokesman for the Board of Trade said.

In a message sent to members of the group Tuesday morning, Michael Woloz, who also serves as a lobbyist for the group, said that the board of trade would join the suit to prevent yellow cabs from being left out as technology allowing electronic hailing becomes ever more prevalent.